Allen Bradley 1790-16BV0X CompactBlock LDX I/O Expansion Block
Allen Bradley 1790-16BV0X CompactBlock LDX I/O Expansion Block
0.0
Points
Brand:Allen Bradley PLC Item No.:1790-16BV0X Product Origin:USA Product Dimensions:104 x 42 x 52 mm Product Weight:0.1 kg Payment:T/T, Western Union, Credit Card Goods_stock:15 Shipping Port:Xiamen, China Lead Time:1-3 Days Condition:Brand New And Original Warranty:1 Year Certificate:COO
The Allen Bradley 1790-16BV0X CompactBlock LDX I/O Expansion Block is a 16-channel universal digital input module from the Bulletin 1790 product family. It is designed to expand the signal acquisition capacity of compatible CompactBlock LDX distributed I/O systems.
The module supports 24 V DC input signals and accepts both sinking and sourcing field-device configurations. Its 16 input channels allow multiple discrete signals to be collected through a single expansion block, making it suitable for machine monitoring, production equipment, and process automation applications.
For convenient operation and maintenance, the 1790-16BV0X includes individual green input-status indicators. Photocoupler isolation between the I/O and logic circuits helps separate field-side electrical signals from internal module circuitry. Its 37-pin D-shell connector provides an organized interface for connecting field wiring.
The expansion block must be installed with a compatible CompactBlock LDX base block. Multiple expansion modules can be added to a supported assembly, subject to the base block's configuration limits.
Rockwell Automation discontinued the 1790-16BV0X effective September 30, 2023. It remains relevant to legacy DeviceNet installations, spare-parts procurement, and maintenance projects that require the original hardware configuration.
Technical Specifications
Parameter
Specification
Brand
Allen Bradley
Model
1790-16BV0X
Product Series
CompactBlock LDX
Product Type
Digital Input Expansion Block
Communication Network
DeviceNet
Number of Inputs
16
Input Type
Universal Digital Input
Input Configuration
Sinking or Sourcing
Nominal Input Voltage
24 V DC
On-State Voltage
9.6–28.8 V DC
Off-State Voltage
5.0 V DC Maximum
On-State Current
8 mA Maximum per Channel at 28.8 V DC
Input Impedance
4.8 kΩ
Input Signal Delay
10 ms OFF-to-ON / 10 ms ON-to-OFF
Status Indicators
16 Green LEDs
Isolation Method
Photocoupler
Isolation Voltage
1250 V AC RMS
Common Configuration
8 Points per Common
Connector
37-Pin D-Shell
Protection Rating
IP20
Operating Temperature
0–60°C
Storage Temperature
-40–85°C
Relative Humidity
Up to 90%, Non-Condensing
Dimensions
104 × 42 × 52 mm
Weight
0.1 kg / 0.22 lb
Lifecycle Status
Discontinued
Recommended Related Models
The following Allen Bradley products are relevant to CompactBlock LDX distributed I/O applications:
These modules provide different input and output functions. Confirm the required signal configuration and base-block compatibility before selecting a related model.
Popular Related Models
1790-T16BV0X – Allen Bradley CompactBlock LDX 16-Point Universal Input Expansion Block with Screw-Clamp Connection.
1790-T8BV8BX – Allen Bradley CompactBlock LDX Mixed Digital I/O Expansion Block.
1790-T8BV8VX – Allen Bradley CompactBlock LDX Mixed Digital I/O Expansion Block.
When purchasing the 1790-16BV0X, verify the complete catalog number, input configuration, connector type, and compatibility with the installed CompactBlock LDX base block. For discontinued equipment, checking hardware condition and availability is also important.
Applications
The Allen Bradley 1790-16BV0X CompactBlock LDX I/O Expansion Block is a 16-point universal digital input module designed for DeviceNet-based industrial automation systems. It expands the input capacity of compatible CompactBlock LDX base blocks, allowing the control system to collect signals from multiple field devices.
Typical applications include:
Industrial Machine Control: Monitors signals from push buttons, limit switches, and proximity sensors.
Manufacturing Automation: Collects discrete operating signals from production machinery and assembly equipment.
Conveyor Systems: Monitors equipment status, position switches, and other field signals.
Process Automation: Acquires digital signals from compatible field instruments and control devices.
Equipment Monitoring: Supports monitoring of machine states, interlocks, and auxiliary contacts.
Distributed I/O Systems: Adds input capacity to compatible DeviceNet installations.
Key Features and Advantages
1. 16-Point Universal Digital Inputs
The module provides 16 digital input channels, supporting both sinking and sourcing input configurations. This flexibility allows it to accommodate different field-device wiring arrangements.
2. 24 V DC Input Operation
Designed for nominal 24 V DC industrial control circuits, the module supports common discrete input devices used in automation applications.
3. Flexible Input Wiring
The universal input design accepts both sinking and sourcing signals, reducing the need to select different input modules for different wiring configurations.
4. Individual Channel Indicators
Sixteen green LED indicators provide visual input-status information, helping technicians monitor field signals during commissioning and troubleshooting.
5. Photocoupler Isolation
Photocoupler isolation between the I/O circuits and logic circuits helps separate field-side signals from the module's internal electronics.
6. Compact D-Shell Interface
The 37-pin D-shell connector provides a structured interface for field wiring and supports compact installation arrangements.
7. Modular I/O Expansion
The 1790-16BV0X connects to a compatible CompactBlock LDX base block, allowing additional digital input capacity without replacing the complete I/O assembly.
Technical FAQs
Q1: How many input channels does the 1790-16BV0X provide?
It provides 16 digital input points, supporting both sinking and sourcing input signals.
Q2: What is the nominal input voltage?
The nominal input voltage is 24 V DC, with an on-state voltage range of 9.6–28.8 V DC.
Q3: What is the maximum on-state input current?
The maximum on-state current is 8 mA per channel at 28.8 V DC.
Q4: What is the maximum off-state voltage?
The specified maximum off-state voltage is 5.0 V DC.
Q5: Can the module accept both sinking and sourcing input signals?
Yes. Its universal input design supports both configurations, providing flexibility when connecting compatible field devices.
Q6: Does the module have individual input indicators?
Yes. It features 16 green input-status LEDs that help technicians identify the operating state of individual channels.
Q7: What is the input signal delay?
The specified maximum input delay is 10 ms from OFF to ON and 10 ms from ON to OFF.
Q8: What isolation protection is provided?
The module uses photocoupler isolation between the I/O and logic circuits, with a specified isolation voltage of 1250 V AC RMS.
Q9: Can the 1790-16BV0X operate as a standalone I/O module?
No. It is an expansion block and must be connected to a compatible CompactBlock LDX base block. It cannot function independently.
Q10: What should be checked before replacing this module?
Verify the input voltage, sinking or sourcing wiring arrangement, connector type, DeviceNet configuration, and compatibility with the existing base block. Also check the input-status indicators after installation.
